A siC plate heat exchanger

Abstract

This utility model discloses a SiC plate heat exchanger, relating to the field of heat exchange technology. It includes a rear end plate, a PTFE base plate, heat exchange plates, a sealing ring, a front end plate, fastening screws, and a compression spring. Both the front and rear end plates have screw holes and positioning rod holes on their surfaces. The combination of the fastening screws and the compression spring provides uniform clamping force to the entire heat exchanger. The fluid flow channel adopts an S-shaped design, allowing the fluid to form a tortuous flow path within the channel, increasing the contact time and turbulence between the fluid and the plates, thus enhancing heat transfer. The single-sided flow channel layout avoids dead zones or vortex areas within the channel, allowing for more complete heat exchange. The heat exchange plates possess excellent high-temperature resistance, enabling stable operation under high-temperature conditions without affecting thermal conductivity. Their high hardness and wear resistance make them less prone to wear in heat exchange scenarios containing particulate media. The front end plate is made of steel lined with PTFE, enabling the equipment to adapt to highly corrosive environments such as strong acids and alkalis.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange technology, and in particular to a SiC plate heat exchanger. Background Technology

[0002] SiC plate heat exchangers, as highly efficient heat exchange devices, primarily utilize the excellent properties of silicon carbide (SiC) material to achieve heat transfer between different fluids. SiC material possesses characteristics such as high thermal conductivity, high strength, high temperature resistance, and corrosion resistance, enabling SiC plate heat exchangers to play a vital role in numerous fields including chemical engineering, energy, and metallurgy, meeting heat exchange requirements under various operating conditions. In practical applications, SiC plate heat exchangers typically involve the following structures: 1. Heat exchange plates are the core components for achieving heat exchange. Their surfaces are designed with a special corrugated structure to increase the heat exchange area, enhance the turbulence of the fluid, and improve the heat exchange efficiency. 2. Sealing gaskets are installed between the plates to provide a seal, prevent leakage between different fluids, and ensure the normal operation of the heat exchanger; 3. The frame and clamping device are used to fix and clamp the plates, so that the heat exchanger forms a compact whole and can withstand the pressure of the internal fluid; 4. The inlet and outlet pipes are responsible for connecting to external pipelines to enable the introduction and discharge of hot and cold fluids.

[0003] Currently, manufacturers employ various equipment and methods to achieve efficient heat exchange. Some manufacturers use metal plate heat exchangers, improving heat exchange performance by optimizing the corrugation shape and arrangement of the plates. Others use ceramic heat exchangers, utilizing the high-temperature resistance and corrosion resistance of ceramics, making them suitable for special operating conditions. Some manufacturers have developed new spiral plate heat exchangers, which, through a unique spiral flow channel design, extend the residence time of the fluid within the heat exchanger, thereby enhancing heat exchange efficiency.

[0004] However, the aforementioned existing technologies still have the following problems: Traditional tube or block-hole heat exchangers have limited flow channel design, resulting in low fluid turbulence and insufficient heat exchange area utilization, leading to large equipment size but limited heat exchange efficiency, making it difficult to meet the heat exchange requirements of high-capacity scenarios. Some non-metallic heat exchangers have complex flow channel structures, require high processing precision, and need to distinguish the plate orientation during assembly, resulting in low production efficiency and difficulty in ensuring product consistency. The SiC plate heat exchanger proposed in this application effectively solves the problems of heat exchange efficiency, corrosion resistance, processing assembly, and sealing reliability in the existing technologies by optimizing the flow channel design, material combination, and sealing structure, providing a better solution for thermal energy management in high-temperature corrosion scenarios. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a SiC plate heat exchanger that solves the problems of traditional tube or block-hole heat exchangers, which suffer from limited flow channel design, low fluid turbulence, and insufficient heat exchange area utilization, resulting in large equipment size but limited heat exchange efficiency, making it difficult to meet the heat exchange requirements of high-production scenarios. Furthermore, some non-metallic heat exchangers have complex flow channel structures, require high processing precision, and need to distinguish the plate orientation during assembly, leading to low production efficiency and difficulty in ensuring product consistency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A SiC plate heat exchanger includes a rear end plate, a PTFE base plate, a heat exchange plate, a sealing ring, a front end plate, fastening screws, and a compression spring. The surfaces of the front end plate and the rear end plate are provided with screw holes and positioning rod holes. The surfaces of the PTFE base plate and the heat exchange plate are provided with sealing grooves and fluid flow channels. The surfaces of the heat exchange plate and the front end plate are provided with two material inlets and two material outlets. The front end plate is made of steel lined with PTFE, and the rear end plate is made of metal.

[0007] Preferably, the fluid flow channel is an S-shaped flow channel and is arranged on one side, and the sealing ring is arranged in the sealing groove.

[0008] Preferably, the front end plate and the rear end plate are fixed by fastening screws and compression springs, and the sealing ring is an irregular O-ring.

[0009] Compared with the prior art, the present invention has the following beneficial effects: 1. The fluid flow channel adopts an S-shaped flow channel design, which makes the fluid form a tortuous flow path within the flow channel, increasing the contact time and turbulence between the fluid and the plate, and enhancing the heat transfer effect. The single-sided flow channel layout avoids dead zones or vortex areas inside the flow channel, allowing for more complete heat exchange. The heat exchange plate has excellent high-temperature resistance and can work stably under high-temperature conditions without affecting its thermal conductivity. Its high hardness and wear resistance make it less prone to wear in heat exchange scenarios containing particulate media. The front end plate is made of steel lined with PTFE material, combined with the corrosion resistance of SiC, enabling the equipment to adapt to strong corrosive environments such as strong acids and strong alkalis.

[0010] 2. The material inlet and outlet are arranged on one side for the same material, and the fluid flow channel is set on only one side. This reduces the processing steps and mold types of the heat exchange plate, lowers production complexity, and eliminates the need to distinguish the front and back of the heat exchange plate during installation. All plates can be assembled uniformly, improving installation efficiency and ensuring the consistency of the finished product. The matching design of the irregular O-ring seal and the sealing groove, combined with the elastic compensation function of the compression spring, can effectively cope with the slight deformation that may occur in the heat exchange plate, ensuring the sealing effect. The spring compression structure makes the entire heat exchange plate evenly stressed, avoiding the risk of plate breakage caused by local stress concentration and enhancing the stability of equipment operation. Attached Figure Description

[0011] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0012] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a structural diagram of the rear end plate of this utility model; Figure 3 This is a structural diagram of the heat exchange plate of this utility model.

[0013] Legend: 1. Rear end plate; 2. Front end plate; 3. PTFE base plate; 4. Compression spring; 5. Fastening screw; 6. Heat exchange plate; 7. Sealing ring; 8. Screw hole; 9. Positioning rod hole; 10. Material inlet; 11. Sealing groove; 12. Fluid flow channel; 13. Material outlet. Detailed Implementation

[0014] This application provides a SiC plate heat exchanger that effectively solves the problems of traditional tube or block-hole heat exchangers, which suffer from limited flow channel design, low fluid turbulence, and insufficient heat exchange area utilization, resulting in large equipment size but limited heat exchange efficiency, making it difficult to meet the heat exchange requirements of high-production scenarios. Furthermore, some non-metallic heat exchangers have complex flow channel structures, require high processing precision, and necessitate differentiation of plate orientation during assembly, leading to low production efficiency and difficulty in ensuring product consistency. By optimizing the flow channel design, material combination, and sealing structure, this application effectively solves the problems of heat exchange efficiency, corrosion resistance, processing assembly, and sealing reliability in existing technologies, providing a better solution for thermal energy management in high-temperature and corrosive scenarios.

[0015] Example like Figure 1 , Figure 2 , Figure 3 As shown, the technical solution in this application embodiment effectively solves the technical problems of traditional tube or block-hole heat exchangers, which suffer from limited flow channel design, low fluid turbulence, and insufficient heat exchange area utilization, resulting in large equipment size but limited heat exchange efficiency, making it difficult to meet the heat exchange requirements of high-capacity scenarios. Furthermore, some non-metallic heat exchangers have complex flow channel structures, require high processing precision, and necessitate differentiation of plate orientation during assembly, leading to low production efficiency and difficulty in ensuring product consistency. The overall approach is as follows: To address the problems existing in the prior art, this utility model provides a SiC plate heat exchanger, including a rear end plate 1, a PTFE base plate 3, a heat exchange plate 6, a sealing ring 7, a front end plate 2, fastening screws 5, and a compression spring 4. Both the front end plate 2 and the rear end plate 1 have screw holes 8 and positioning rod holes 9 on their surfaces. Both the PTFE base plate 3 and the heat exchange plate 6 have sealing grooves 11 and fluid channels 12 on their surfaces. Both the heat exchange plate 6 and the front end plate 2 have two material inlets 10 and two material outlets 13 on their surfaces. The front end plate 2 is made of steel lined with PTFE, and the rear end plate 1 is made of metal. The material to be heat-exchanged enters from the material inlet 10 of the front end plate 2, travels along the S-shaped channel on the surface of the heat exchange plate 6, exchanges heat with the medium on the other side in the channel, and then flows out from the corresponding material outlet 13 of the front end plate 2. The PTFE base plate 3 closes the end. The flow channel ensures that the medium flows in a directional manner within the preset flow channel, preventing leakage or cross-flow. During installation, the rear end plate 1 is first laid with a PTFE base plate 3, followed by the sealing ring 7 and heat exchange plate 6, and finally the front end plate 2 is fixed. The front end plate 2 and the rear end plate 1 are connected to the compression spring 4 by fastening screws 5. The elastic pressure of the spring makes the sealing ring 7 tightly embedded in the sealing groove 11 of the heat exchange plate 6. Even if there is slight deformation of the heat exchange plate 6, the sealing ring 7 can achieve a tight fit through deformation compensation, forming a reliable sealing structure. The positioning rod holes 9 of the front end plate 2 and the rear end plate 1 are used to insert positioning rods to axially limit the heat exchange plate 6, ensuring that the flow channels of the multi-layer heat exchange plate 6 are accurately aligned during installation, avoiding fluid flow obstruction due to misalignment. The combination of fastening screws 5 and compression spring 4 provides uniform clamping force for the entire heat exchanger, ensuring structural stability.

[0016] The fluid channel 12 is an S-shaped channel with a single-sided arrangement. The sealing ring 7 is located within the sealing groove 11. The front plate 2 and the rear plate 1 are fixed using fastening screws 5 and compression springs 4. The sealing ring 7 is a non-circular O-ring. The S-shaped design of the fluid channel 12 allows the fluid to form a tortuous flow path within the channel, increasing the contact time and turbulence between the fluid and the plates, thus enhancing heat transfer. The single-sided channel layout avoids dead zones or vortex areas within the channel, allowing for more efficient heat exchange. The heat exchange plate 6 possesses excellent high-temperature resistance, enabling stable operation under high-temperature conditions without affecting its thermal conductivity. Its high hardness and wear resistance make it resistant to wear in heat exchange scenarios containing particulate media. The front plate 2 is made of steel lined with PTFE, combined with the corrosion resistance of SiC, allowing the equipment to adapt to highly corrosive environments such as strong acids and alkalis. The material inlet 10 and the material outlet 13 are arranged on one side for the same material. The fluid flow channel 12 is set on only one side, reducing the processing steps and mold types of the heat exchange plate 6, reducing production complexity, and eliminating the need to distinguish the front and back of the heat exchange plate 6 during installation. All plates can be assembled uniformly, improving installation efficiency and ensuring the consistency of the finished product. The matching design of the irregular O-ring seal 7 and the sealing groove 11, combined with the elastic compensation function of the compression spring 4, can effectively cope with the slight deformation that may occur in the heat exchange plate 6, ensuring the sealing effect. The spring compression structure makes the entire heat exchange plate 6 uniformly stressed, avoiding the risk of plate breakage caused by local stress concentration, and enhancing the stability of equipment operation. Compared with traditional shell-and-tube or block-hole heat exchangers, the plate structure is more compact, occupies less space, and has a flexible flow channel layout. This design can be widely used in high-temperature corrosive media heat exchange scenarios in chemical, metallurgical, and energy fields. At the same time, by optimizing the flow channel and assembly method, the efficiency of thermal energy management in industrial production is improved.

[0017] Working principle: The material to be heat-exchanged enters through the material inlet 10 of the front plate 2, flows along the S-shaped flow channel on the surface of the heat exchange plate 6, exchanges heat with the medium on the other side in the flow channel, and then flows out from the corresponding material outlet 13 of the front plate 2. The PTFE base plate 3 seals the end flow channel to ensure that the medium flows in a directional manner within the preset flow channel, preventing leakage or cross-flow. During installation, the PTFE base plate 3 is laid on the rear plate 1 first, followed by the sealing ring 7 and the heat exchange plate 6, and finally the front plate 2 is fixed. The front plate 2 and the rear plate 1 are connected to the compression spring 4 by the fastening screw 5. The elastic pressure of the spring makes the sealing ring 7 tightly embedded in the sealing groove 11 of the heat exchange plate 6, even if there are minor defects in the heat exchange plate 6. The sealing ring 7 can also achieve a tight fit through deformation compensation, forming a reliable sealing structure. The positioning rod holes 9 of the front plate 2 and the rear plate 1 are used to insert positioning rods to axially limit the heat exchange plate 6, ensuring that the flow channels of the multi-layer heat exchange plate 6 are accurately aligned during installation, avoiding fluid flow obstruction due to misalignment. The combination of the fastening screw 5 and the compression spring 4 provides uniform clamping force for the entire heat exchanger, ensuring structural stability. The fluid flow channel 12 adopts an S-shaped flow channel design, which makes the fluid form a tortuous flow path in the flow channel, increasing the contact time and turbulence between the fluid and the plate, and enhancing the heat transfer effect. The single-sided flow channel layout avoids dead zones or vortex zones inside the flow channel. The heat exchange plate 6, with its excellent high-temperature resistance, allows for more efficient heat exchange and can operate stably under high-temperature conditions without affecting its thermal conductivity. Its high hardness and wear resistance make it resistant to wear in heat exchange scenarios containing particulate media. The front-end plate 2 is made of steel lined with PTFE, combined with the corrosion-resistant properties of SiC, enabling the equipment to withstand highly corrosive environments such as strong acids and alkalis. The material inlet 10 and material outlet 13 are arranged on one side for the same material, and the fluid flow channel 12 is only set on one side, reducing the processing steps and mold types of the heat exchange plate 6, lowering production complexity. During installation, there is no need to distinguish the front and back of the heat exchange plate 6; all plates can be assembled uniformly, improving installation efficiency. To ensure the consistency of the finished product, the matching design of the irregular O-ring seal 7 and the sealing groove 11, combined with the elastic compensation function of the compression spring 4, can effectively cope with the slight deformation that may occur in the heat exchange plate 6, ensuring the sealing effect. The spring compression structure makes the entire heat exchange plate 6 uniformly stressed, avoiding the risk of plate breakage caused by local stress concentration, and enhancing the stability of equipment operation. Compared with traditional shell-and-tube or block-hole heat exchangers, the plate structure is more compact, occupies less space, and has a flexible flow channel layout. This design can be widely used in high-temperature corrosive media heat exchange scenarios in chemical, metallurgical, and energy fields. At the same time, by optimizing the flow channel and assembly method, it improves the efficiency of thermal energy management in industrial production.

[0018] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A SiC plate heat exchanger, characterized in that, It includes a rear end plate (1), a PTFE base plate (3), a heat exchange plate (6), a sealing ring (7), a front end plate (2), a fastening screw (5), and a compression spring (4); the front end plate (2) and the rear end plate (1) are both provided with screw holes (8) and positioning rod holes (9); The PTFE base plate (3) and heat exchange plate (6) are provided with sealing grooves (11) and fluid flow channels (12), and the heat exchange plate (6) and front end plate (2) are provided with two material inlets (10) and two material outlets (13).

2. A SiC plate heat exchanger as described in claim 1, characterized in that: The front end plate (2) is made of steel lined with PTFE. The rear end plate (1) is made of metal.

3. A SiC plate heat exchanger as described in claim 1, characterized in that: The fluid channel (12) is an S-shaped channel and is arranged on one side.

4. A SiC plate heat exchanger as described in claim 1, characterized in that: The sealing ring (7) is disposed in the sealing groove (11).

5. A SiC plate heat exchanger as described in claim 1, characterized in that: The front end plate (2) and the rear end plate (1) are fixed by fastening screws (5) and compression springs (4).

6. A SiC plate heat exchanger as described in claim 1, characterized in that: The sealing ring (7) is an irregular O-ring.

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